/***************************************************************************
 *   Copyright (C) 2004-2007 by Georgy Yunaev, gyunaev@ulduzsoft.com       *
 *   Please do not use email address above for bug reports; see            *
 *   the README file                                                       *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.             *
 ***************************************************************************/

#include <stdlib.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>

#include "kde-qt.h"

#include <qaccel.h>
#include <qevent.h>

#include "libchmfile.h"
#include "libchmfileimpl.h"
#include "libchmurlfactory.h"

#include "kchmmainwindow.h"
#include "kchmconfig.h"
#include "kchmindexwindow.h"
#include "kchmsearchwindow.h"
#include "kchmbookmarkwindow.h"
#include "kchmtreeviewitem.h"
#include "kchmsearchtoolbar.h"
#include "kchmsettings.h"
#include "kchmsetupdialog.h"
#include "iconstorage.h"
#include "kchmnavtoolbar.h"
#include "kchmviewwindow.h"
#include "kchmviewwindowmgr.h"
#include "kchmkeyeventfilter.h"
#include "kchmcontentswindow.h"

#if !defined (USE_KDE)
	#include "kqrunprocess.h"
#endif

#include "kchmmainwindow.moc"


KCHMMainWindow::KCHMMainWindow()
    : KQMainWindow ( 0, "KCHMMainWindow", WDestructiveClose )
{
	const unsigned int WND_X_SIZE = 700;
	const unsigned int WND_Y_SIZE = 500;
	const unsigned int SPLT_X_SIZE = 200;

	m_FirstTimeShow = true;
	m_chmFile = 0;
	
	m_indexWindow = 0;
	m_searchWindow = 0;
	m_contentsWindow = 0;
	m_viewWindowMgr = 0;

	m_tabContextPage = -1;
	m_tabIndexPage = -1;
	m_tabSearchPage = -1;
	m_tabBookmarkPage = -1;
	
	setupSignals();

	m_currentSettings = new KCHMSettings;
		
	// Create the initial layout - a splitter with tab window in left, and text browser in right
	m_windowSplitter = new QSplitter(this);
	m_tabWidget = new KQTabWidget( m_windowSplitter );
	m_viewWindowMgr = new KCHMViewWindowMgr( m_windowSplitter );
	
	m_bookmarkWindow = new KCHMBookmarkWindow (m_tabWidget);

	// Add the tabs
	m_tabWidget->addTab( m_bookmarkWindow, i18n("Bookmarks") );

	setupToolbarsAndMenu();
		
	setCentralWidget( m_windowSplitter );
	
	QValueList<int> sizes;
	sizes.push_back (SPLT_X_SIZE);
	sizes.push_back (WND_X_SIZE - SPLT_X_SIZE);
	m_windowSplitter->setSizes (sizes);
	
	resize (WND_X_SIZE, WND_Y_SIZE);

#if defined (ENABLE_AUTOTEST_SUPPORT)
	m_autoteststate = STATE_OFF;
	m_useShortAutotest = false;
#endif /* defined (ENABLE_AUTOTEST_SUPPORT) */

	QAccel * accel = new QAccel( this );
	accel->connectItem ( accel->insertItem ( Key_F11 ), this, SLOT ( slotToggleFullScreenMode() ) );
	accel->connectItem ( accel->insertItem ( CTRL + Key_1), this, SLOT ( slotActivateContentTab() ) );
	accel->connectItem ( accel->insertItem ( CTRL + Key_2), this, SLOT ( slotActivateIndexTab() ) );
	accel->connectItem ( accel->insertItem ( CTRL + Key_3), this, SLOT ( slotActivateSearchTab() ) );
	accel->connectItem ( accel->insertItem ( CTRL + Key_4), this, SLOT ( slotActivateBookmarkTab() ) );
	accel->connectItem ( accel->insertItem ( Key_F3 ), m_searchToolbar, SLOT ( onBtnNextSearchResult() ) );

	statusBar()->show();
	setIcon( *gIconStorage.getApplicationIcon() );

	m_aboutDlgMenuText = i18n( "%1 version %2\n\nCopyright (C) George Yunaev,"
			"gyunaev@ulduzsoft.com, 2004-2007\nhttp://www.kchmviewer.net\n\n"
			"Licensed under GNU GPL license.\n\n"
			"Please check my another project, http://www.transientmail.com - temporary "
			"e-mail address, which expires automatically." )
			. arg(APP_NAME) . arg(APP_VERSION);
}


KCHMMainWindow::~KCHMMainWindow()
{
}


void KCHMMainWindow::slotOpenMenuItemActivated()
{
#if defined (USE_KDE)
    QString fn = KFileDialog::getOpenFileName( appConfig.m_lastOpenedDir, i18n("*.chm|Compressed Help Manual (*.chm)"), this);
#else
    QString fn = QFileDialog::getOpenFileName( appConfig.m_lastOpenedDir, i18n("Compressed Help Manual (*.chm)"), this);
#endif

    if ( !fn.isEmpty() )
		loadChmFile( fn );
    else
	{
		if ( !m_chmFile )
			exit (1);
			
		statusBar()->message( i18n("Loading aborted"), 2000 );
	}
}


bool KCHMMainWindow::loadChmFile ( const QString &fileName, bool call_open_page )
{
	LCHMFile * new_chmfile = new LCHMFile();
	
	if ( new_chmfile->loadFile( fileName ) )
	{
		// The new file is opened, so we can close the old one
		if ( m_chmFile )
		{
			closeChmFile( );
			delete m_chmFile;
		}
	
		m_chmFile = new_chmfile;
		
		// Show current encoding in status bar
		showInStatusBar( tr("Detected chm file charset: %1") . arg(m_chmFile->currentEncoding()->language) );

		// Make the file name absolute; we'll need it later
		QDir qd;
		qd.setPath (fileName);
		m_chmFilename = qd.absPath();
		
		// Qt's 'dirname' does not work well
		QFileInfo qf ( m_chmFilename );
		appConfig.m_lastOpenedDir = qf.dirPath(true);

		// Order the tabulations
		int number_of_pages = 0;
		
		if ( m_chmFile->hasTableOfContents() )
			m_tabContextPage = number_of_pages++;
		else
			m_tabContextPage = -1;

		if ( m_chmFile->hasIndexTable() )
			m_tabIndexPage = number_of_pages++;
		else
			m_tabIndexPage = -1;

		// We always show search
		m_tabSearchPage = number_of_pages++;

		m_tabBookmarkPage = number_of_pages;

		showOrHideContextWindow( m_tabContextPage );
		showOrHideIndexWindow( m_tabIndexPage );
		showOrHideSearchWindow( m_tabSearchPage );
		
		m_bookmarkWindow->invalidate();
		m_navToolbar->updateIconStatus( false, false );
		m_viewWindowMgr->invalidate();
		refreshCurrentBrowser();

		if ( m_currentSettings->loadSettings (fileName) )
		{
			const LCHMTextEncoding * encoding = 
					m_chmFile->impl()->lookupByLCID(  m_currentSettings->m_activeencodinglcid );

			m_tabWidget->setCurrentPage( m_currentSettings->m_activetabsystem );
			
			if ( encoding )
			{
				m_chmFile->setCurrentEncoding( encoding );
				m_searchToolbar->setChosenEncodingInMenu( encoding );
			}
			
			if ( m_searchWindow )
				m_searchWindow->restoreSettings (m_currentSettings->m_searchhistory);
				
			m_bookmarkWindow->restoreSettings (m_currentSettings->m_bookmarks);

			if ( call_open_page )
			{
				m_viewWindowMgr->restoreSettings( m_currentSettings->m_viewwindows );
				m_viewWindowMgr->setCurrentPage( m_currentSettings->m_activetabwindow );
			}
			
			// Restore the main window size
			QValueList<int> sizes;
			sizes.push_back( m_currentSettings->m_window_size_splitter );
			sizes.push_back( m_currentSettings->m_window_size_x - m_currentSettings->m_window_size_splitter );
			
			m_windowSplitter->setSizes( sizes );
			resize( m_currentSettings->m_window_size_x, m_currentSettings->m_window_size_y );
		}
		else
		{
			m_tabWidget->setCurrentPage (0);
			m_searchToolbar->setChosenEncodingInMenu( m_chmFile->currentEncoding() );
			
			if ( call_open_page )
				openPage( m_chmFile->homeUrl() );
		}

		m_searchToolbar->setEnabled (true);
		appConfig.addFileToHistory( m_chmFilename );
		updateHistoryMenu();
		return true;
	}
	else
	{
		QMessageBox mbox(
				i18n("%1 - failed to load the chm file") . arg(APP_NAME),
				i18n("Unable to load the chm file %1") . arg(fileName), 
				QMessageBox::Critical, 
				QMessageBox::Ok, 
				QMessageBox::NoButton, 
				QMessageBox::NoButton);
		mbox.exec();
		
		statusBar()->message( 
				i18n("Could not load file %1").arg(fileName),
				2000 );
		delete new_chmfile;	
		return false;
	}
}


void KCHMMainWindow::slotPrintMenuItemActivated()
{
	currentBrowser()->printCurrentPage();
}


void KCHMMainWindow::slotAboutMenuItemActivated()
{
	QString caption = i18n( "About %1" ) . arg(APP_NAME);
	QString text = m_aboutDlgMenuText;
	
	// It is quite funny that the argument order differs
#if defined (USE_KDE)
	KMessageBox::about( this, text, caption );
#else
    QMessageBox::about( this, caption, text );
#endif
}


void KCHMMainWindow::slotAboutQtMenuItemActivated()
{
    QMessageBox::aboutQt( this, APP_NAME);
}

void KCHMMainWindow::refreshCurrentBrowser( )
{
	QString title = m_chmFile->title();
	
	if ( !title )
		title = APP_NAME;
	// KDE adds application name automatically, so we don't need it here	
#if !defined (USE_KDE)
	else
		title = (QString) APP_NAME + " - " + title;
#endif	
	
	setCaption ( title );
	
	currentBrowser()->invalidate();
	
	if ( m_contentsWindow )
		m_contentsWindow->refillTableOfContents();
}

void KCHMMainWindow::slotOnTreeClicked( QListViewItem * item )
{
	bool unused;
	
	if ( !item )
		return;
	
	KCHMIndTocItem * treeitem = (KCHMIndTocItem*) item;
	slotLinkClicked( treeitem->getUrl(), unused );
}


void KCHMMainWindow::slotLinkClicked ( const QString & link, bool& follow_link )
{
	if ( link.isEmpty() )
		return;
	
	if ( gKeyEventFilter.isShiftPressed() )
	{
		openPage( link, OPF_NEW_TAB | OPF_CONTENT_TREE );
		follow_link = false;
	}
	else if ( gKeyEventFilter.isCtrlPressed() )
	{
		openPage( link, OPF_NEW_TAB | OPF_BACKGROUND );
		follow_link = false;
	}
	else
		// If the openPage failed, we do not need to follow the link.
		follow_link = openPage( link, OPF_CONTENT_TREE | OPF_ADD2HISTORY );
}


bool KCHMMainWindow::openPage( const QString & srcurl, unsigned int flags )
{
	QString p1, p2, url = srcurl;
	
	if ( url == "/" )
		url = m_chmFile->homeUrl();

	if ( LCHMUrlFactory::isRemoteURL (url, p1) )
	{
		switch ( appConfig.m_onExternalLinkClick )
		{
		case KCHMConfig::ACTION_DONT_OPEN:
			break;

		case KCHMConfig::ACTION_ASK_USER:
	   		if ( QMessageBox::question(this,
				 i18n("%1 - remote link clicked - %2") . arg(APP_NAME) . arg(p1),
				 i18n("A remote link %1 will start the external program to open it.\n\nDo you want to continue?").arg( url ),
				 i18n("&Yes"), i18n("&No"),
				 QString::null, 0, 1 ) )
					return false;
				
			// no break! should continue to open.

		case KCHMConfig::ACTION_ALWAYS_OPEN:
		{
#if defined (USE_KDE)
			new KRun ( url );
#else
			run_process( appConfig.m_QtBrowserPath, url );
#endif
		}
		break;
		}

		return false; // do not change the current page.
	}
		
	// Filter the URLs which do not need to be opened at all by Qt version
	if ( LCHMUrlFactory::isJavascriptURL (url) )
	{
		QMessageBox::information( this, 
			i18n( "%1 - JavsScript link clicked") . arg(APP_NAME),
			i18n( "You have clicked a JavaScript link.\nTo prevent security-related issues JavaScript URLs are disabled in CHM files.") );
		
		return false;
	}

	if ( LCHMUrlFactory::isNewChmURL (url, p1, p2) && p1 != m_chmFilename )
	{
   		if ( QMessageBox::question( this,
			i18n( "%1 - link to a new CHM file clicked"). arg(APP_NAME),
			i18n( "You have clicked a link, which leads to a new CHM file %1.\nThe current file will be closed.\n\nDo you want to continue?").arg( p1 ),
			i18n( "&Yes" ), i18n( "&No" ),
			QString::null, 0, 1 ) )
				return false;

		// Because chm file always contain relative link, and current filename is not changed,
		// we need to form a new path
		QFileInfo qfi( m_chmFilename );
		QString newfilename = qfi.dirPath(true) + "/" + p1;
		
		QStringList event_args;
		event_args.push_back( newfilename );
		event_args.push_back( p2 ); // url
		
		qApp->postEvent( this, new KCHMUserEvent( "loadAndOpen", event_args ) );
		return false;
	}
	
	KCHMViewWindow * vwnd = currentBrowser();
	if ( flags & OPF_NEW_TAB )
		vwnd = m_viewWindowMgr->addNewTab( !(flags & OPF_BACKGROUND) );
	
	// Store current page and position to add it to history if we change it
	int hist_scrollpos = currentBrowser()->getScrollbarPosition();
	QString hist_url = currentBrowser()->getOpenedPage();
	
	if ( vwnd->openUrl (url) )
	{
		// Open all the tree items to show current item (if needed)
		if ( (flags & OPF_CONTENT_TREE) != 0 )
			locateInContentTree( vwnd->getOpenedPage() );
		
		if ( flags & OPF_ADD2HISTORY )
			currentBrowser()->addNavigationHistory( hist_url, hist_scrollpos );
	}
	
	return true;
}


void KCHMMainWindow::showEvent( QShowEvent * )
{
	if ( !m_FirstTimeShow )
		return;

	m_FirstTimeShow = false;
	
	if ( !parseCmdLineArgs( ) )
	{
		if ( appConfig.m_LoadLatestFileOnStartup && appConfig.m_History.size() > 0 )
		{
			if ( loadChmFile ( appConfig.m_History[0] ) )
				return;
		}
		
		emit slotOpenMenuItemActivated();
	}
}

void KCHMMainWindow::setupToolbarsAndMenu( )
{
	// Create a 'file' toolbar
    QToolBar * toolbar = new QToolBar(this);
	
	toolbar->setLabel( i18n( "File Operations") );

    QPixmap iconFileOpen (*gIconStorage.getToolbarPixmap(KCHMIconStorage::fileopen));
    QToolButton * fileOpen = new QToolButton (iconFileOpen, 
				i18n( "Open File" ), 
				QString::null,
				this, 
				SLOT( slotOpenMenuItemActivated() ),
				toolbar);
	
	QString fileOpenText = i18n( "Click this button to open an existing chm file." );
	QWhatsThis::add( fileOpen, fileOpenText );

    QPixmap iconFilePrint (*gIconStorage.getToolbarPixmap(KCHMIconStorage::print));
    QToolButton * filePrint	= new QToolButton (iconFilePrint,
				i18n( "Print File" ),
				QString::null,
				this,
				SLOT( slotPrintMenuItemActivated() ),
				toolbar);

	QString filePrintText = i18n( "Click this button to print the current page");
	QWhatsThis::add( filePrint, filePrintText );

	// Setup the menu
	KQPopupMenu * file = new KQPopupMenu( this );
	menuBar()->insertItem( i18n( "&File"), file );

    int id;
	id = file->insertItem ( iconFileOpen, i18n( "&Open..."), this, SLOT( slotOpenMenuItemActivated() ), CTRL+Key_O );
    file->setWhatsThis( id, fileOpenText );

	id = file->insertItem( iconFilePrint, i18n( "&Print..."), this, SLOT( slotPrintMenuItemActivated() ), CTRL+Key_P );
    file->setWhatsThis( id, filePrintText );

    file->insertSeparator();
	id = file->insertItem ( i18n( "E&xtract CHM content..."), this, SLOT( slotExtractCHM() ) );
	file->setWhatsThis( id, i18n( "Click this button to extract the whole CHM file content into a specific directory") );
	file->insertSeparator();
	
	m_menuHistory = new KQPopupMenu( file );
	connect ( m_menuHistory, SIGNAL( activated(int) ), this, SLOT ( slotHistoryMenuItemActivated(int) ));
	
	file->insertItem( i18n( "&Recent files"), m_menuHistory );
	
	file->insertSeparator();
	file->insertItem( i18n( "&Quit"), qApp, SLOT( closeAllWindows() ), CTRL+Key_Q );

	KQPopupMenu * menu_edit = new KQPopupMenu( this );
	menuBar()->insertItem( i18n( "&Edit"), menu_edit );

	menu_edit->insertItem ( i18n( "&Copy"), this, SLOT( slotBrowserCopy()), CTRL+Key_C );
	menu_edit->insertItem ( i18n( "&Select all"), this, SLOT( slotBrowserSelectAll()), CTRL+Key_A );

    menu_edit->insertSeparator();
	
	// KCHMNavToolbar
	m_navToolbar = new KCHMNavToolbar( this );
	
	// KCHMSearchToolbar also adds 'view' menu
	m_searchToolbar = new KCHMSearchAndViewToolbar (this);
	
	// m_bookmarkWindow adds 'Bookmarks' menu
	m_bookmarkWindow->createMenu( this );
	
	// m_viewWindowMgr creates 'Window' menu
	m_viewWindowMgr->createMenu( this );
	
	KQPopupMenu * settings = new KQPopupMenu( this );
	menuBar()->insertItem( i18n( "&Settings"), settings );
	settings->insertItem( i18n( "&Change settings..."), this, SLOT( slotChangeSettingsMenuItemActivated() ));

#if defined(USE_KDE)
	QPopupMenu *help = helpMenu( m_aboutDlgMenuText );
#else
    KQPopupMenu * help = new KQPopupMenu( this );
	help->insertItem( i18n( "&About"), this, SLOT( slotAboutMenuItemActivated() ), Key_F1 );
	help->insertItem( i18n( "About &Qt"), this, SLOT( slotAboutQtMenuItemActivated() ));
	help->insertSeparator();
	help->insertItem( i18n( "What's &This"), this, SLOT(whatsThis()), SHIFT+Key_F1 );
#endif
		
	menuBar()->insertItem( i18n( "&Help"), help );
	updateHistoryMenu();
}

void KCHMMainWindow::slotAddBookmark( )
{
	emit m_bookmarkWindow->onAddBookmarkPressed ();
}

void KCHMMainWindow::setTextEncoding( const LCHMTextEncoding * encoding )
{
	m_chmFile->setCurrentEncoding( encoding );
	m_searchToolbar->setChosenEncodingInMenu( encoding );
	
	// Because updateView() will call view->invalidate(), which clears the view->getOpenedPage(),
	// we have to make a copy of it.
	QString url = currentBrowser()->getOpenedPage();
	
	// Regenerate the content and index trees	
	refreshCurrentBrowser();
	
	currentBrowser()->openUrl( url );
}

void KCHMMainWindow::closeChmFile( )
{
	// Prepare the settings
	if ( appConfig.m_HistoryStoreExtra )
	{
		m_currentSettings->m_activeencodinglcid = m_chmFile->currentEncoding()->winlcid;
		m_currentSettings->m_activetabsystem = m_tabWidget->currentPageIndex( );
		m_currentSettings->m_activetabwindow = m_viewWindowMgr->currentPageIndex( );
		
		m_currentSettings->m_window_size_x = width();
		m_currentSettings->m_window_size_y = height();
		m_currentSettings->m_window_size_splitter = m_windowSplitter->sizes()[0];
		
		if ( m_searchWindow )
			m_searchWindow->saveSettings (m_currentSettings->m_searchhistory);
				
		m_bookmarkWindow->saveSettings( m_currentSettings->m_bookmarks );

		m_viewWindowMgr->saveSettings( m_currentSettings->m_viewwindows );

		m_currentSettings->saveSettings( );
	}
	
	appConfig.save();
}


void KCHMMainWindow::closeEvent ( QCloseEvent * e )
{
	// Save the settings if we have something opened
	if ( m_chmFile )
	{
		closeChmFile( );
		delete m_chmFile;
		m_chmFile = 0;
	}

	QMainWindow::closeEvent ( e );
}

bool KCHMMainWindow::parseCmdLineArgs( )
{
	QString filename = QString::null, search_query = QString::null;
	QString search_index = QString::null, search_bookmark = QString::null;
	bool do_autotest = false;

#if defined (USE_KDE)
	KCmdLineArgs *args = KCmdLineArgs::parsedArgs();

	if ( args->isSet("autotestmode") )
		do_autotest = true;
	
	if ( args->isSet("shortautotestmode") )
		do_autotest = m_useShortAutotest = true;

	search_query = args->getOption ("search");
	search_index = args->getOption ("sindex");
	
	if ( args->count() > 0 )
		filename = args->arg(0);
#else
	// argv[0] in Qt is still a program name
	for ( int i = 1; i < qApp->argc(); i++  )
	{
		if ( !strcmp (qApp->argv()[i], "--autotestmode") )
			do_autotest = m_useShortAutotest = true;
		else if ( !strcmp (qApp->argv()[i], "--shortautotestmode") )
			do_autotest = true;
		else if ( !strcmp (qApp->argv()[i], "--search") )
			search_query = qApp->argv()[++i];
		else if ( !strcmp (qApp->argv()[i], "--sindex") )
			search_index = qApp->argv()[++i];
		else if ( !strcmp (qApp->argv()[i], "-h") || !strcmp (qApp->argv()[i], "--help") )
		{
			fprintf (stderr, "Usage: %s [chmfile]\n", qApp->argv()[0]);
			exit (1);
		}
		else
			filename = qApp->argv()[i];
	}
#endif

	if ( !filename.isEmpty() )
	{
		if ( !loadChmFile( QString::fromLocal8Bit( filename )) )
			return true; // skip the latest checks, but do not exit from the program

		if ( !search_index.isEmpty() )
		{
			QStringList event_args;
			event_args.push_back( search_index );
			qApp->postEvent( this, new KCHMUserEvent( "findInIndex", event_args ) );
		}
		
		if ( !search_query.isEmpty() )	
		{
			QStringList event_args;
			event_args.push_back( search_query );
			qApp->postEvent( this, new KCHMUserEvent( "searchQuery", event_args ) );
		}
		
		if ( do_autotest )
		{
#if defined (ENABLE_AUTOTEST_SUPPORT)
			if ( filename.isEmpty() )
				qFatal ("Could not use Auto Test mode without a chm file!");

			m_autoteststate = STATE_INITIAL;
			showMinimized ();
			runAutoTest();
#else
			qFatal ("Auto Test mode support is not compiled in.");
#endif /* defined (ENABLE_AUTOTEST_SUPPORT) */
		}
		return true;
	}
	
	return false;
}

void KCHMMainWindow::slotBrowserSelectAll( )
{
	currentBrowser()->clipSelectAll();
}

void KCHMMainWindow::slotBrowserCopy( )
{
	currentBrowser()->clipCopy();
}

void KCHMMainWindow::slotChangeSettingsMenuItemActivated()
{
	KCHMSetupDialog dlg ( this );
	
	// Set up the parameters
	dlg.m_radioOnBeginOpenDialog->setChecked ( !appConfig.m_LoadLatestFileOnStartup );
	dlg.m_radioOnBeginOpenLast->setChecked ( appConfig.m_LoadLatestFileOnStartup );
	dlg.m_historySize->setValue ( appConfig.m_HistorySize );
	dlg.m_rememberHistoryInfo->setChecked ( appConfig.m_HistoryStoreExtra );
	
	dlg.m_radioExtLinkOpenAlways->setChecked ( appConfig.m_onExternalLinkClick == KCHMConfig::ACTION_ALWAYS_OPEN );
	dlg.m_radioExtLinkAsk->setChecked ( appConfig.m_onExternalLinkClick == KCHMConfig::ACTION_ASK_USER );
	dlg.m_radioExtLinkOpenNever->setChecked ( appConfig.m_onExternalLinkClick == KCHMConfig::ACTION_DONT_OPEN );
	
	dlg.m_radioNewChmOpenAlways->setChecked ( appConfig.m_onNewChmClick == KCHMConfig::ACTION_ALWAYS_OPEN );
	dlg.m_radioNewChmAsk->setChecked ( appConfig.m_onNewChmClick == KCHMConfig::ACTION_ASK_USER );
	dlg.m_radioNewChmOpenNever->setChecked ( appConfig.m_onNewChmClick == KCHMConfig::ACTION_DONT_OPEN );

#if defined (USE_KDE)
	dlg.m_groupQtsettings->setEnabled ( false );
	dlg.m_groupKDEsettings->setEnabled ( true );
#else
	dlg.m_groupQtsettings->setEnabled ( true );
	dlg.m_groupKDEsettings->setEnabled ( false );
#endif

	dlg.m_qtBrowserPath->setText ( appConfig.m_QtBrowserPath );
	dlg.m_radioUseQtextBrowser->setChecked ( appConfig.m_kdeUseQTextBrowser );
	dlg.m_radioUseKHTMLPart->setChecked ( !appConfig.m_kdeUseQTextBrowser );
	
	dlg.m_enableJS->setChecked ( appConfig.m_kdeEnableJS );
	dlg.m_enablePlugins->setChecked ( appConfig.m_kdeEnablePlugins );
	dlg.m_enableJava->setChecked ( appConfig.m_kdeEnableJava );
	dlg.m_enableRefresh->setChecked ( appConfig.m_kdeEnableRefresh );
	
	dlg.m_advExternalProgramName->setText( appConfig.m_advExternalEditorPath );
	dlg.m_advViewSourceExternal->setChecked ( !appConfig.m_advUseInternalEditor );
	dlg.m_advViewSourceInternal->setChecked ( appConfig.m_advUseInternalEditor );
	
	// Search engine
	dlg.m_useSearchEngineInternal->setChecked( appConfig.m_useSearchEngine == KCHMConfig::SEARCH_USE_CHM );
	dlg.m_useSearchEngineNew->setChecked( appConfig.m_useSearchEngine == KCHMConfig::SEARCH_USE_MINE );
	
	// Connect buddies
	dlg.m_labelUseSearchEngineInternal->setBuddy( dlg.m_useSearchEngineInternal );
	dlg.m_labelUseSearchEngineNew->setBuddy( dlg.m_useSearchEngineNew );
	
	if ( dlg.exec() == QDialog::Accepted )
	{
		appConfig.m_LoadLatestFileOnStartup = dlg.m_radioOnBeginOpenLast->isChecked();
		appConfig.m_HistorySize = dlg.m_historySize->value();
		appConfig.m_HistoryStoreExtra = dlg.m_rememberHistoryInfo->isChecked();

		if ( dlg.m_radioExtLinkOpenAlways->isChecked () )
			appConfig.m_onExternalLinkClick = KCHMConfig::ACTION_ALWAYS_OPEN;
		else if ( dlg.m_radioExtLinkAsk->isChecked () )
			appConfig.m_onExternalLinkClick = KCHMConfig::ACTION_ASK_USER;
		else
			appConfig.m_onExternalLinkClick = KCHMConfig::ACTION_DONT_OPEN;

		if ( dlg.m_radioNewChmOpenAlways->isChecked () )
			appConfig.m_onNewChmClick = KCHMConfig::ACTION_ALWAYS_OPEN;
		else if ( dlg.m_radioNewChmAsk->isChecked () )
			appConfig.m_onNewChmClick = KCHMConfig::ACTION_ASK_USER;
		else
			appConfig.m_onNewChmClick = KCHMConfig::ACTION_DONT_OPEN;

		appConfig.m_QtBrowserPath = dlg.m_qtBrowserPath->text();
		
		// Check the changes
		bool need_restart = false;
		
		if ( appConfig.m_kdeEnableJS != dlg.m_enableJS->isChecked() )
		{
			need_restart = true;
			appConfig.m_kdeEnableJS = dlg.m_enableJS->isChecked();
		}
		
		if ( appConfig.m_kdeEnablePlugins != dlg.m_enablePlugins->isChecked() )
		{
			need_restart = true;
			appConfig.m_kdeEnablePlugins = dlg.m_enablePlugins->isChecked();
		}
		
		if ( appConfig.m_kdeEnableJava != dlg.m_enableJava->isChecked() )
		{
			need_restart = true;
			appConfig.m_kdeEnableJava = dlg.m_enableJava->isChecked();
		}
		
		if ( appConfig.m_kdeEnableRefresh != dlg.m_enableRefresh->isChecked() )
		{
			need_restart = true;
			appConfig.m_kdeEnableRefresh = dlg.m_enableRefresh->isChecked();
		}
		
		if ( appConfig.m_kdeUseQTextBrowser != dlg.m_radioUseQtextBrowser->isChecked() )
		{
			need_restart = true;
			appConfig.m_kdeUseQTextBrowser = dlg.m_radioUseQtextBrowser->isChecked();
		}
		
		if ( dlg.m_useSearchEngineNew->isChecked() 
		&& appConfig.m_useSearchEngine == KCHMConfig::SEARCH_USE_CHM )
		{
			appConfig.m_useSearchEngine = KCHMConfig::SEARCH_USE_MINE;
			m_searchWindow->invalidate();
		}
		
		if ( dlg.m_useSearchEngineInternal->isChecked() 
		&& appConfig.m_useSearchEngine == KCHMConfig::SEARCH_USE_MINE )
		{
			appConfig.m_useSearchEngine = KCHMConfig::SEARCH_USE_CHM;
			m_searchWindow->invalidate();
		}
					
		appConfig.m_advExternalEditorPath = dlg.m_advExternalProgramName->text();
		appConfig.m_advUseInternalEditor = dlg.m_advViewSourceExternal->isChecked();
		appConfig.m_advUseInternalEditor = dlg.m_advViewSourceInternal->isChecked();
		
		appConfig.save();
		
		if ( need_restart )
			QMessageBox::information( 
					this,
					APP_NAME,
					i18n( "Changing browser view options or search engine used\n"
							"requires restarting the application to take effect." )	);
	}
}


void KCHMMainWindow::setupSignals( )
{
#if defined(HAVE_SIGACTION)
	struct sigaction sa;
    memset ((char *)&sa, 0, sizeof(sa));
	sigemptyset (&sa.sa_mask);
	sigaddset (&sa.sa_mask, SIGCHLD);

#ifdef SA_RESTART
	sa.sa_flags = SA_RESTART;
#endif
	
	sa.sa_handler = SIG_IGN;
	sigaction (SIGCHLD, &sa, (struct sigaction *)0);
#else /* !HAVE_SIGACTION */
	signal (SIGCHLD, SIG_IGN);
#endif /* HAVE_SIGACTION */
}

void KCHMMainWindow::slotHistoryMenuItemActivated( int item )
{
	if ( item < 0 || item >= (signed) appConfig.m_History.size() )
		qFatal ("KCHMMainWindow::slotHistoryMenuItemActivated: bad history menu id %d", item);
	
	QString filename = appConfig.m_History[item];
	
	// remove it, so it will be added again at the history top, and will not shitf anything.
//	appConfig.m_History.remove ( appConfig.m_History.begin() + item);
	loadChmFile ( filename );
}

void KCHMMainWindow::updateHistoryMenu()
{
	m_menuHistory->clear ();
	
	for ( int i = appConfig.m_History.size() - 1; i >= 0; i-- )
		m_menuHistory->insertItem( appConfig.m_History[i], i );
}

void KCHMMainWindow::slotActivateContentTab( )
{
	if ( m_tabContextPage != -1 ) 
		m_tabWidget->setCurrentPage( m_tabContextPage );
}

void KCHMMainWindow::slotActivateIndexTab( )
{
	if ( m_tabIndexPage != -1 ) 
		m_tabWidget->setCurrentPage( m_tabIndexPage );
}

void KCHMMainWindow::slotActivateSearchTab( )
{
	if ( m_tabSearchPage != -1 ) 
		m_tabWidget->setCurrentPage( m_tabSearchPage );
}

void KCHMMainWindow::slotActivateBookmarkTab( )
{
	m_tabWidget->setCurrentPage( m_tabBookmarkPage );
}

void KCHMMainWindow::showOrHideContextWindow( int tabindex )
{
	if ( tabindex == -1 )
	{
		if ( m_contentsWindow )
		{
			m_tabWidget->removePage (m_contentsWindow);
			delete m_contentsWindow;
			m_contentsWindow = 0;
		}
	}
	else
	{
		if ( !m_contentsWindow )
		{
			m_contentsWindow = new KCHMContentsWindow( m_tabWidget );
			
			// Handle clicking on m_contentsWindow element
			connect( m_contentsWindow, 
					 SIGNAL( clicked( QListViewItem* ) ), 
					 this, 
					 SLOT( slotOnTreeClicked( QListViewItem* ) ) );
			
			connect( m_contentsWindow, 
					 SIGNAL( doubleClicked ( QListViewItem *, const QPoint &, int ) ), 
					 this, 
					 SLOT( slotOnTreeDoubleClicked ( QListViewItem *, const QPoint &, int ) ) );
			
			m_tabWidget->insertTab (m_contentsWindow, i18n( "Contents" ), tabindex);
		}
	}
}

void KCHMMainWindow::showOrHideIndexWindow( int tabindex )
{
	// Test whether to show/invalidate the index window
	if ( tabindex == -1 )
	{
		if ( m_indexWindow )
		{
			m_tabWidget->removePage (m_indexWindow);
			delete m_indexWindow;
			m_indexWindow = 0;
		}
	}
	else
	{
		if ( !m_indexWindow )
		{
			m_indexWindow = new KCHMIndexWindow (m_tabWidget);
			m_tabWidget->insertTab (m_indexWindow, i18n( "Index" ), tabindex);
		}
		else
			m_indexWindow->invalidate();
	}
}

void KCHMMainWindow::showOrHideSearchWindow( int tabindex )
{
	if ( tabindex == -1 )
	{
		if ( m_searchWindow )
		{
			m_tabWidget->removePage (m_searchWindow);
			delete m_searchWindow;
			m_searchWindow = 0;
		}
	}
	else
	{
		if ( !m_searchWindow )
		{
			m_searchWindow = new KCHMSearchWindow (m_tabWidget);
			m_tabWidget->insertTab (m_searchWindow, i18n( "Search" ), tabindex);
		}
		else
			m_searchWindow->invalidate();
	}
}

void KCHMMainWindow::slotEnableFullScreenMode( bool enable )
{
	if ( enable )
	{
		if ( !isFullScreen() )
		{
			showFullScreen ();
			menuBar()->hide();
			statusBar()->hide();
		}
	}
	else
	{
		if ( isFullScreen() )
		{
			showNormal ();
			menuBar()->show();
			statusBar()->show();
		}
	}
}

void KCHMMainWindow::slotShowContentsWindow( bool show )
{
	if ( show )
		m_tabWidget->show();
	else
		m_tabWidget->hide();
}

void KCHMMainWindow::slotToggleFullScreenMode( )
{
	slotEnableFullScreenMode( !isFullScreen() );
}

void KCHMMainWindow::slotLocateInContentWindow( )
{
	// There may be no content tab at all
	if ( !m_contentsWindow  || m_tabContextPage == -1 )
		return;
	
	// Activate a content tab
	m_tabWidget->setCurrentPage( m_tabContextPage );
	
	if ( m_contentsWindow )
	{
		// Open all the tree items to show current item (if needed)
		KCHMIndTocItem * treeitem = m_contentsWindow->getTreeItem( currentBrowser()->getOpenedPage() );
	
		if ( treeitem )
		{
			KCHMIndTocItem * itemparent = treeitem;
			
			while ( (itemparent = (KCHMIndTocItem*) itemparent->parent()) != 0 )
				itemparent->setOpen(true);
			
			m_contentsWindow->setCurrentItem (treeitem);
			m_contentsWindow->ensureItemVisible (treeitem);
		}
		else
			statusBar()->message( i18n( "Could not locate opened topic in content window"), 2000 );
	}
}

void KCHMMainWindow::slotExtractCHM( )
{
	QStringList files;
	
#if defined (USE_KDE)
	QString outdir = KFileDialog::getExistingDirectory (
			QString::null,
			this,
			i18n("Choose a directory to store CHM content") );
#else
	QString outdir = QFileDialog::getExistingDirectory (
			QString::null,
			this,
			0,
			i18n("Choose a directory to store CHM content"),
			TRUE );
#endif
	
	if ( outdir.isEmpty() )
		return;
	
	outdir += "/";
	
	// Enumerate all the files in archive
	if ( !m_chmFile || !m_chmFile->enumerateFiles( &files ) )
		return;

	KQProgressModalDialog progress( i18n("Extracting CHM content"), i18n("Extracting files..."), i18n("Abort"), files.size(), this );
	
	for ( unsigned int i = 0; i < files.size(); i++ )
	{
		progress.setProgress( i );
		
		if ( (i % 3) == 0 )
		{
			qApp->processEvents();

			if ( progress.wasCancelled() )
				break;
		}

		// Extract the file
		QByteArray buf;
		
		if ( m_chmFile->getFileContentAsBinary( &buf, files[i] ) )
		{
			// Split filename to get the list of subdirectories
			QStringList dirs = QStringList::split( '/', files[i] );

			// Walk through the list of subdirectories, and create them if needed
			// dirlevel is used to detect extra .. and prevent overwriting files
			// outside the directory (like creating the file images/../../../../../etc/passwd
			unsigned int i, dirlevel = 0;
			QStringList dirlist;
				
			for ( i = 0; i < dirs.size() - 1; i++ )
			{
				// Skip .. which lead too far above
				if ( dirs[i] == ".." )
				{
					if ( dirlevel > 0 )
					{
						dirlevel--;
						dirlist.pop_back();
					}
				}
				else
				{
					dirlist.push_back( dirs[i] );
					
					QDir dir ( outdir + dirlist.join( "/" ) );
					if ( !dir.exists() )
					{
						if ( !dir.mkdir( dir.path() ) )
							qWarning( "Could not create subdir %s\n", dir.path().ascii() );
					}
				}
			}
			
			QString filename = outdir + dirlist.join( "/" ) + "/" + dirs[i];
			QFile wf( filename );
			if ( !wf.open( IO_WriteOnly ) )
			{
					qWarning( "Could not write file %s\n", filename.ascii() );
					continue;
			}
			
			wf. writeBlock( buf );
			wf.close();
		}
		else
			qWarning( "Could not get file %s\n", files[i].ascii() );
	}
	
	progress.setProgress( files.size() );
}

KCHMViewWindow * KCHMMainWindow::currentBrowser( ) const
{
	return m_viewWindowMgr->current();
}

void KCHMMainWindow::slotOpenPageInNewTab( )
{
	openPage( currentBrowser()->getNewTabLink(), OPF_NEW_TAB | OPF_CONTENT_TREE );
}

void KCHMMainWindow::slotOpenPageInNewBackgroundTab( )
{
	openPage( currentBrowser()->getNewTabLink(), OPF_NEW_TAB | OPF_BACKGROUND );
}

void KCHMMainWindow::slotBrowserChanged( KCHMViewWindow * newbrowser )
{
	locateInContentTree( newbrowser->getOpenedPage() );
}

void KCHMMainWindow::locateInContentTree( const QString & url )
{
	if ( !m_contentsWindow )
		return;
	
	KCHMIndTocItem * treeitem = m_contentsWindow->getTreeItem( url );
	
	if ( treeitem )
	{
		KCHMIndTocItem * itemparent = treeitem;
		while ( (itemparent = (KCHMIndTocItem*) itemparent->parent()) != 0 )
			itemparent->setOpen(true);
			
		m_contentsWindow->setCurrentItem (treeitem);
		m_contentsWindow->ensureItemVisible (treeitem);
	}
}

void KCHMMainWindow::slotOnTreeDoubleClicked( QListViewItem * item, const QPoint &, int )
{
	// Open/close only existing item which have children
	if ( !item || item->childCount() == 0 )
		return;
	
	item->setOpen( !item->isOpen() );
	item->repaint();
}

bool KCHMMainWindow::event( QEvent * e )
{
	if ( e->type() == QEvent::User )
		return handleUserEvent( (KCHMUserEvent*) e );
	
	return QWidget::event( e );
}

bool KCHMMainWindow::handleUserEvent( const KCHMUserEvent * event )
{
	if ( event->m_action == "loadAndOpen" )
	{
		if ( event->m_args.size() != 1 && event->m_args.size() != 2 )
			qFatal("handleUserEvent: event loadAndOpen must receive 1 or 2 args");
		
		QString chmfile = event->m_args[0];
		QString openurl = event->m_args.size() > 1 ? event->m_args[1] : "/";
				
		return loadChmFile( chmfile, false ) && openPage( openurl );
	}
	else if ( event->m_action == "openPage" )
	{
		if ( event->m_args.size() != 1 )
			qFatal("handleUserEvent: event openPage must receive 1 arg");
		
		return openPage( event->m_args[0] );
	}
	else if ( event->m_action == "findInIndex" )
	{
		if ( event->m_args.size() != 1 )
			qFatal( "handleUserEvent: event searchQuery must receive 1 arg" );
		
		if ( m_tabIndexPage == -1 )
			return false;

		slotActivateIndexTab();
		m_indexWindow->search( event->m_args[0] );
		return true;
	}
	else if ( event->m_action == "searchQuery" )
	{
		if ( event->m_args.size() != 1 )
			qFatal( "handleUserEvent: event searchQuery must receive 1 arg" );
		
		if ( m_tabSearchPage == -1 )
			return false;

		slotActivateSearchTab();
		m_searchWindow->execSearchQueryInGui( event->m_args[0] );
		return true;
	}
	else
		qWarning( "Unknown user event received: %s", event->m_action.ascii() );
	
	return false;
}


#if defined (ENABLE_AUTOTEST_SUPPORT)
void KCHMMainWindow::runAutoTest()
{
	KCHMIndTocItem * item;

	switch (m_autoteststate)
	{
	case STATE_INITIAL:
		if ( m_contentsWindow && !m_useShortAutotest )
		{
			m_autotestlistiterator = QListViewItemIterator (m_contentsWindow);
			m_autoteststate = STATE_CONTENTS_OPENNEXTPAGE;
		}
		else
			m_autoteststate = STATE_OPEN_INDEX;
		
		QTimer::singleShot (500, this, SLOT(runAutoTest()) );
		break; // allow to finish the initialization sequence
		
	case STATE_CONTENTS_OPENNEXTPAGE:
		if ( (item = (KCHMIndTocItem *) m_autotestlistiterator.current()) != 0 )
		{
			openPage( item->getUrl(), OPF_CONTENT_TREE | OPF_ADD2HISTORY );
			m_autotestlistiterator++;
		}
		else
			m_autoteststate = STATE_OPEN_INDEX;
		
		QTimer::singleShot (50, this, SLOT(runAutoTest()) );
		break;

	case STATE_OPEN_INDEX:
		if ( m_indexWindow )
			m_tabWidget->setCurrentPage (1);
		
		m_autoteststate = STATE_SHUTDOWN;
		QTimer::singleShot (500, this, SLOT(runAutoTest()) );
		break;

	case STATE_SHUTDOWN:
		qApp->quit();
		break;
		
	default:
		break;
	}
}
#endif /* defined (ENABLE_AUTOTEST_SUPPORT) */


//TODO: KDE: xmlgui
//TODO: Search result highlighting